dev/generator
SHA-1 Hash Generator - Free & Instant | Smocky
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MD5 and SHA-1 can detect accidental corruption but must not be relied on against a deliberate attacker.
Enter text or choose a non-empty file to see its digests.
Frequently asked questions
How many characters are in a SHA-1 digest?
SHA-1 produces 160 bits, rendered as 40 hexadecimal characters. Uppercase and lowercase hex represent the same digest.
Is SHA-1 suitable against deliberate tampering?
SHA-1 has lost collision resistance and should not be used for new signatures or authenticity guarantees. It can still help compare legacy checksums for accidental changes.
Will hashing a file reproduce its Git object ID?
Not directly. In repositories using SHA-1, Git hashes an object header along with its content. This Tool hashes only the file bytes, without that Git header. Files are capped at 100 MB.